CoCalc -- lossless_mips_dsp

GitHub Repository: Tetragramm/opencv
Path: blob/master/3rdparty/libwebp/src/dsp/lossless_mips_dsp_r2.c
¹⁶³⁴⁸ views
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// Copyright 2014 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// Image transforms and color space conversion methods for lossless decoder.
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//
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// Author(s):  Djordje Pesut    ([email protected])
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//             Jovan Zelincevic ([email protected])
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#include "src/dsp/dsp.h"
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#if defined(WEBP_USE_MIPS_DSP_R2)
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#include "src/dsp/lossless.h"
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#include "src/dsp/lossless_common.h"
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#define MAP_COLOR_FUNCS(FUNC_NAME, TYPE, GET_INDEX, GET_VALUE)                 \
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static void FUNC_NAME(const TYPE* src,                                         \
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                      const uint32_t* const color_map,                         \
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                      TYPE* dst, int y_start, int y_end,                       \
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                      int width) {                                             \
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  int y;                                                                       \
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  for (y = y_start; y < y_end; ++y) {                                          \
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    int x;                                                                     \
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    for (x = 0; x < (width >> 2); ++x) {                                       \
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      int tmp1, tmp2, tmp3, tmp4;                                              \
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      __asm__ volatile (                                                       \
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      ".ifc        " #TYPE ",  uint8_t                  \n\t"                  \
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        "lbu       %[tmp1],  0(%[src])                  \n\t"                  \
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        "lbu       %[tmp2],  1(%[src])                  \n\t"                  \
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        "lbu       %[tmp3],  2(%[src])                  \n\t"                  \
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        "lbu       %[tmp4],  3(%[src])                  \n\t"                  \
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        "addiu     %[src],   %[src],      4             \n\t"                  \
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      ".endif                                           \n\t"                  \
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      ".ifc        " #TYPE ",  uint32_t                 \n\t"                  \
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        "lw        %[tmp1],  0(%[src])                  \n\t"                  \
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        "lw        %[tmp2],  4(%[src])                  \n\t"                  \
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        "lw        %[tmp3],  8(%[src])                  \n\t"                  \
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        "lw        %[tmp4],  12(%[src])                 \n\t"                  \
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        "ext       %[tmp1],  %[tmp1],     8,        8   \n\t"                  \
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        "ext       %[tmp2],  %[tmp2],     8,        8   \n\t"                  \
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        "ext       %[tmp3],  %[tmp3],     8,        8   \n\t"                  \
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        "ext       %[tmp4],  %[tmp4],     8,        8   \n\t"                  \
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        "addiu     %[src],   %[src],      16            \n\t"                  \
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      ".endif                                           \n\t"                  \
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        "sll       %[tmp1],  %[tmp1],     2             \n\t"                  \
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        "sll       %[tmp2],  %[tmp2],     2             \n\t"                  \
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        "sll       %[tmp3],  %[tmp3],     2             \n\t"                  \
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        "sll       %[tmp4],  %[tmp4],     2             \n\t"                  \
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        "lwx       %[tmp1],  %[tmp1](%[color_map])      \n\t"                  \
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        "lwx       %[tmp2],  %[tmp2](%[color_map])      \n\t"                  \
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        "lwx       %[tmp3],  %[tmp3](%[color_map])      \n\t"                  \
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        "lwx       %[tmp4],  %[tmp4](%[color_map])      \n\t"                  \
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      ".ifc        " #TYPE ",  uint8_t                  \n\t"                  \
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        "ext       %[tmp1],  %[tmp1],     8,        8   \n\t"                  \
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        "ext       %[tmp2],  %[tmp2],     8,        8   \n\t"                  \
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        "ext       %[tmp3],  %[tmp3],     8,        8   \n\t"                  \
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        "ext       %[tmp4],  %[tmp4],     8,        8   \n\t"                  \
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        "sb        %[tmp1],  0(%[dst])                  \n\t"                  \
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        "sb        %[tmp2],  1(%[dst])                  \n\t"                  \
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        "sb        %[tmp3],  2(%[dst])                  \n\t"                  \
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        "sb        %[tmp4],  3(%[dst])                  \n\t"                  \
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        "addiu     %[dst],   %[dst],      4             \n\t"                  \
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      ".endif                                           \n\t"                  \
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      ".ifc        " #TYPE ",  uint32_t                 \n\t"                  \
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        "sw        %[tmp1],  0(%[dst])                  \n\t"                  \
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        "sw        %[tmp2],  4(%[dst])                  \n\t"                  \
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        "sw        %[tmp3],  8(%[dst])                  \n\t"                  \
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        "sw        %[tmp4],  12(%[dst])                 \n\t"                  \
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        "addiu     %[dst],   %[dst],      16            \n\t"                  \
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      ".endif                                           \n\t"                  \
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        : [tmp1]"=&r"(tmp1), [tmp2]"=&r"(tmp2), [tmp3]"=&r"(tmp3),             \
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          [tmp4]"=&r"(tmp4), [src]"+&r"(src), [dst]"+r"(dst)                   \
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        : [color_map]"r"(color_map)                                            \
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        : "memory"                                                             \
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      );                                                                       \
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    }                                                                          \
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    for (x = 0; x < (width & 3); ++x) {                                        \
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      *dst++ = GET_VALUE(color_map[GET_INDEX(*src++)]);                        \
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    }                                                                          \
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  }                                                                            \
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}
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MAP_COLOR_FUNCS(MapARGB_MIPSdspR2, uint32_t, VP8GetARGBIndex, VP8GetARGBValue)
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MAP_COLOR_FUNCS(MapAlpha_MIPSdspR2, uint8_t, VP8GetAlphaIndex, VP8GetAlphaValue)
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#undef MAP_COLOR_FUNCS
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static WEBP_INLINE uint32_t ClampedAddSubtractFull(uint32_t c0, uint32_t c1,
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                                                   uint32_t c2) {
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  int temp0, temp1, temp2, temp3, temp4, temp5;
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  __asm__ volatile (
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    "preceu.ph.qbr   %[temp1],   %[c0]                 \n\t"
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    "preceu.ph.qbl   %[temp2],   %[c0]                 \n\t"
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    "preceu.ph.qbr   %[temp3],   %[c1]                 \n\t"
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    "preceu.ph.qbl   %[temp4],   %[c1]                 \n\t"
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    "preceu.ph.qbr   %[temp5],   %[c2]                 \n\t"
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    "preceu.ph.qbl   %[temp0],   %[c2]                 \n\t"
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    "subq.ph         %[temp3],   %[temp3],   %[temp5]  \n\t"
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    "subq.ph         %[temp4],   %[temp4],   %[temp0]  \n\t"
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    "addq.ph         %[temp1],   %[temp1],   %[temp3]  \n\t"
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    "addq.ph         %[temp2],   %[temp2],   %[temp4]  \n\t"
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    "shll_s.ph       %[temp1],   %[temp1],   7         \n\t"
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    "shll_s.ph       %[temp2],   %[temp2],   7         \n\t"
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    "precrqu_s.qb.ph %[temp2],   %[temp2],   %[temp1]  \n\t"
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    : [temp0]"=r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
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      [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5)
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    : [c0]"r"(c0), [c1]"r"(c1), [c2]"r"(c2)
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    : "memory"
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  );
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  return temp2;
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}
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static WEBP_INLINE uint32_t ClampedAddSubtractHalf(uint32_t c0, uint32_t c1,
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                                                   uint32_t c2) {
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  int temp0, temp1, temp2, temp3, temp4, temp5;
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  __asm__ volatile (
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    "adduh.qb         %[temp5],   %[c0],      %[c1]       \n\t"
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    "preceu.ph.qbr    %[temp3],   %[c2]                   \n\t"
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    "preceu.ph.qbr    %[temp1],   %[temp5]                \n\t"
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    "preceu.ph.qbl    %[temp2],   %[temp5]                \n\t"
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    "preceu.ph.qbl    %[temp4],   %[c2]                   \n\t"
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    "subq.ph          %[temp3],   %[temp1],   %[temp3]    \n\t"
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    "subq.ph          %[temp4],   %[temp2],   %[temp4]    \n\t"
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    "shrl.ph          %[temp5],   %[temp3],   15          \n\t"
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    "shrl.ph          %[temp0],   %[temp4],   15          \n\t"
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    "addq.ph          %[temp3],   %[temp3],   %[temp5]    \n\t"
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    "addq.ph          %[temp4],   %[temp0],   %[temp4]    \n\t"
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    "shra.ph          %[temp3],   %[temp3],   1           \n\t"
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    "shra.ph          %[temp4],   %[temp4],   1           \n\t"
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    "addq.ph          %[temp1],   %[temp1],   %[temp3]    \n\t"
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    "addq.ph          %[temp2],   %[temp2],   %[temp4]    \n\t"
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    "shll_s.ph        %[temp1],   %[temp1],   7           \n\t"
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    "shll_s.ph        %[temp2],   %[temp2],   7           \n\t"
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    "precrqu_s.qb.ph  %[temp1],   %[temp2],   %[temp1]    \n\t"
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    : [temp0]"=r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
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      [temp3]"=&r"(temp3), [temp4]"=r"(temp4), [temp5]"=&r"(temp5)
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    : [c0]"r"(c0), [c1]"r"(c1), [c2]"r"(c2)
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    : "memory"
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  );
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  return temp1;
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}
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static WEBP_INLINE uint32_t Select(uint32_t a, uint32_t b, uint32_t c) {
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  int temp0, temp1, temp2, temp3, temp4, temp5;
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  __asm__ volatile (
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    "cmpgdu.lt.qb %[temp1], %[c],     %[b]             \n\t"
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    "pick.qb      %[temp1], %[b],     %[c]             \n\t"
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    "pick.qb      %[temp2], %[c],     %[b]             \n\t"
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    "cmpgdu.lt.qb %[temp4], %[c],     %[a]             \n\t"
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    "pick.qb      %[temp4], %[a],     %[c]             \n\t"
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    "pick.qb      %[temp5], %[c],     %[a]             \n\t"
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    "subu.qb      %[temp3], %[temp1], %[temp2]         \n\t"
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    "subu.qb      %[temp0], %[temp4], %[temp5]         \n\t"
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    "raddu.w.qb   %[temp3], %[temp3]                   \n\t"
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    "raddu.w.qb   %[temp0], %[temp0]                   \n\t"
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    "subu         %[temp3], %[temp3], %[temp0]         \n\t"
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    "slti         %[temp0], %[temp3], 0x1              \n\t"
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    "movz         %[a],     %[b],     %[temp0]         \n\t"
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    : [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
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      [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [temp0]"=&r"(temp0),
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      [a]"+&r"(a)
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    : [b]"r"(b), [c]"r"(c)
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  );
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  return a;
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}
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static WEBP_INLINE uint32_t Average2(uint32_t a0, uint32_t a1) {
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  __asm__ volatile (
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    "adduh.qb    %[a0], %[a0], %[a1]       \n\t"
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    : [a0]"+r"(a0)
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    : [a1]"r"(a1)
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  );
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  return a0;
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}
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static WEBP_INLINE uint32_t Average3(uint32_t a0, uint32_t a1, uint32_t a2) {
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  return Average2(Average2(a0, a2), a1);
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}
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static WEBP_INLINE uint32_t Average4(uint32_t a0, uint32_t a1,
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                                     uint32_t a2, uint32_t a3) {
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  return Average2(Average2(a0, a1), Average2(a2, a3));
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}
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static uint32_t Predictor5_MIPSdspR2(uint32_t left, const uint32_t* const top) {
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  return Average3(left, top[0], top[1]);
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}
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static uint32_t Predictor6_MIPSdspR2(uint32_t left, const uint32_t* const top) {
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  return Average2(left, top[-1]);
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}
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static uint32_t Predictor7_MIPSdspR2(uint32_t left, const uint32_t* const top) {
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  return Average2(left, top[0]);
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}
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static uint32_t Predictor8_MIPSdspR2(uint32_t left, const uint32_t* const top) {
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  (void)left;
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  return Average2(top[-1], top[0]);
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}
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static uint32_t Predictor9_MIPSdspR2(uint32_t left, const uint32_t* const top) {
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  (void)left;
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  return Average2(top[0], top[1]);
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}
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static uint32_t Predictor10_MIPSdspR2(uint32_t left,
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                                      const uint32_t* const top) {
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  return Average4(left, top[-1], top[0], top[1]);
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}
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static uint32_t Predictor11_MIPSdspR2(uint32_t left,
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                                      const uint32_t* const top) {
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  return Select(top[0], left, top[-1]);
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}
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static uint32_t Predictor12_MIPSdspR2(uint32_t left,
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                                      const uint32_t* const top) {
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  return ClampedAddSubtractFull(left, top[0], top[-1]);
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}
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static uint32_t Predictor13_MIPSdspR2(uint32_t left,
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                                      const uint32_t* const top) {
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  return ClampedAddSubtractHalf(left, top[0], top[-1]);
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}
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// Add green to blue and red channels (i.e. perform the inverse transform of
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// 'subtract green').
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static void AddGreenToBlueAndRed_MIPSdspR2(const uint32_t* src, int num_pixels,
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                                           uint32_t* dst) {
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  uint32_t temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
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  const uint32_t* const p_loop1_end = src + (num_pixels & ~3);
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  const uint32_t* const p_loop2_end = src + num_pixels;
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  __asm__ volatile (
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    ".set       push                                          \n\t"
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    ".set       noreorder                                     \n\t"
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    "beq        %[src],          %[p_loop1_end],     3f       \n\t"
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    " nop                                                     \n\t"
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  "0:                                                         \n\t"
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    "lw         %[temp0],        0(%[src])                    \n\t"
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    "lw         %[temp1],        4(%[src])                    \n\t"
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    "lw         %[temp2],        8(%[src])                    \n\t"
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    "lw         %[temp3],        12(%[src])                   \n\t"
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    "ext        %[temp4],        %[temp0],           8,    8  \n\t"
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    "ext        %[temp5],        %[temp1],           8,    8  \n\t"
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    "ext        %[temp6],        %[temp2],           8,    8  \n\t"
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    "ext        %[temp7],        %[temp3],           8,    8  \n\t"
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    "addiu      %[src],          %[src],             16       \n\t"
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    "addiu      %[dst],          %[dst],             16       \n\t"
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    "replv.ph   %[temp4],        %[temp4]                     \n\t"
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    "replv.ph   %[temp5],        %[temp5]                     \n\t"
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    "replv.ph   %[temp6],        %[temp6]                     \n\t"
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    "replv.ph   %[temp7],        %[temp7]                     \n\t"
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    "addu.qb    %[temp0],        %[temp0],           %[temp4] \n\t"
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    "addu.qb    %[temp1],        %[temp1],           %[temp5] \n\t"
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    "addu.qb    %[temp2],        %[temp2],           %[temp6] \n\t"
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    "addu.qb    %[temp3],        %[temp3],           %[temp7] \n\t"
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    "sw         %[temp0],        -16(%[dst])                  \n\t"
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    "sw         %[temp1],        -12(%[dst])                  \n\t"
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    "sw         %[temp2],        -8(%[dst])                   \n\t"
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    "bne        %[src],          %[p_loop1_end],     0b       \n\t"
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    " sw        %[temp3],        -4(%[dst])                   \n\t"
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  "3:                                                         \n\t"
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    "beq        %[src],          %[p_loop2_end],     2f       \n\t"
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    " nop                                                     \n\t"
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  "1:                                                         \n\t"
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    "lw         %[temp0],        0(%[src])                    \n\t"
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    "addiu      %[src],          %[src],             4        \n\t"
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    "addiu      %[dst],          %[dst],             4        \n\t"
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    "ext        %[temp4],        %[temp0],           8,    8  \n\t"
277
    "replv.ph   %[temp4],        %[temp4]                     \n\t"
278
    "addu.qb    %[temp0],        %[temp0],           %[temp4] \n\t"
279
    "bne        %[src],          %[p_loop2_end],     1b       \n\t"
280
    " sw        %[temp0],        -4(%[dst])                   \n\t"
281
  "2:                                                         \n\t"
282
    ".set       pop                                           \n\t"
283
    : [dst]"+&r"(dst), [src]"+&r"(src), [temp0]"=&r"(temp0),
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      [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
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      [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [temp6]"=&r"(temp6),
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      [temp7]"=&r"(temp7)
287
    : [p_loop1_end]"r"(p_loop1_end), [p_loop2_end]"r"(p_loop2_end)
288
    : "memory"
289
  );
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}
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static void TransformColorInverse_MIPSdspR2(const VP8LMultipliers* const m,
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                                            const uint32_t* src, int num_pixels,
294
                                            uint32_t* dst) {
295
  int temp0, temp1, temp2, temp3, temp4, temp5;
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  uint32_t argb, argb1, new_red;
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  const uint32_t G_to_R = m->green_to_red_;
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  const uint32_t G_to_B = m->green_to_blue_;
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  const uint32_t R_to_B = m->red_to_blue_;
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  const uint32_t* const p_loop_end = src + (num_pixels & ~1);
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  __asm__ volatile (
302
    ".set            push                                    \n\t"
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    ".set            noreorder                               \n\t"
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    "beq             %[src],       %[p_loop_end],  1f        \n\t"
305
    " nop                                                    \n\t"
306
    "replv.ph        %[temp0],     %[G_to_R]                 \n\t"
307
    "replv.ph        %[temp1],     %[G_to_B]                 \n\t"
308
    "replv.ph        %[temp2],     %[R_to_B]                 \n\t"
309
    "shll.ph         %[temp0],     %[temp0],       8         \n\t"
310
    "shll.ph         %[temp1],     %[temp1],       8         \n\t"
311
    "shll.ph         %[temp2],     %[temp2],       8         \n\t"
312
    "shra.ph         %[temp0],     %[temp0],       8         \n\t"
313
    "shra.ph         %[temp1],     %[temp1],       8         \n\t"
314
    "shra.ph         %[temp2],     %[temp2],       8         \n\t"
315
  "0:                                                        \n\t"
316
    "lw              %[argb],      0(%[src])                 \n\t"
317
    "lw              %[argb1],     4(%[src])                 \n\t"
318
    "sw              %[argb],      0(%[dst])                 \n\t"
319
    "sw              %[argb1],     4(%[dst])                 \n\t"
320
    "addiu           %[src],       %[src],         8         \n\t"
321
    "addiu           %[dst],       %[dst],         8         \n\t"
322
    "precrq.qb.ph    %[temp3],     %[argb],        %[argb1]  \n\t"
323
    "preceu.ph.qbra  %[temp3],     %[temp3]                  \n\t"
324
    "shll.ph         %[temp3],     %[temp3],       8         \n\t"
325
    "shra.ph         %[temp3],     %[temp3],       8         \n\t"
326
    "mul.ph          %[temp5],     %[temp3],       %[temp0]  \n\t"
327
    "mul.ph          %[temp3],     %[temp3],       %[temp1]  \n\t"
328
    "precrq.ph.w     %[new_red],   %[argb],        %[argb1]  \n\t"
329
    "ins             %[argb1],     %[argb],        16,   16  \n\t"
330
    "shra.ph         %[temp5],     %[temp5],       5         \n\t"
331
    "shra.ph         %[temp3],     %[temp3],       5         \n\t"
332
    "addu.ph         %[new_red],   %[new_red],     %[temp5]  \n\t"
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    "addu.ph         %[argb1],     %[argb1],       %[temp3]  \n\t"
334
    "preceu.ph.qbra  %[temp5],     %[new_red]                \n\t"
335
    "shll.ph         %[temp4],     %[temp5],       8         \n\t"
336
    "shra.ph         %[temp4],     %[temp4],       8         \n\t"
337
    "mul.ph          %[temp4],     %[temp4],       %[temp2]  \n\t"
338
    "sb              %[temp5],     -2(%[dst])                \n\t"
339
    "sra             %[temp5],     %[temp5],       16        \n\t"
340
    "shra.ph         %[temp4],     %[temp4],       5         \n\t"
341
    "addu.ph         %[argb1],     %[argb1],       %[temp4]  \n\t"
342
    "preceu.ph.qbra  %[temp3],     %[argb1]                  \n\t"
343
    "sb              %[temp5],     -6(%[dst])                \n\t"
344
    "sb              %[temp3],     -4(%[dst])                \n\t"
345
    "sra             %[temp3],     %[temp3],       16        \n\t"
346
    "bne             %[src],       %[p_loop_end],  0b        \n\t"
347
    " sb             %[temp3],     -8(%[dst])                \n\t"
348
  "1:                                                        \n\t"
349
    ".set            pop                                     \n\t"
350
    : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
351
      [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
352
      [new_red]"=&r"(new_red), [argb]"=&r"(argb),
353
      [argb1]"=&r"(argb1), [dst]"+&r"(dst), [src]"+&r"(src)
354
    : [G_to_R]"r"(G_to_R), [R_to_B]"r"(R_to_B),
355
      [G_to_B]"r"(G_to_B), [p_loop_end]"r"(p_loop_end)
356
    : "memory", "hi", "lo"
357
  );
358

359
  // Fall-back to C-version for left-overs.
360
  if (num_pixels & 1) VP8LTransformColorInverse_C(m, src, 1, dst);
361
}
362

363
static void ConvertBGRAToRGB_MIPSdspR2(const uint32_t* src,
364
                                       int num_pixels, uint8_t* dst) {
365
  int temp0, temp1, temp2, temp3;
366
  const uint32_t* const p_loop1_end = src + (num_pixels & ~3);
367
  const uint32_t* const p_loop2_end = src + num_pixels;
368
  __asm__ volatile (
369
    ".set       push                                       \n\t"
370
    ".set       noreorder                                  \n\t"
371
    "beq        %[src],      %[p_loop1_end],    3f         \n\t"
372
    " nop                                                  \n\t"
373
  "0:                                                      \n\t"
374
    "lw         %[temp3],    12(%[src])                    \n\t"
375
    "lw         %[temp2],    8(%[src])                     \n\t"
376
    "lw         %[temp1],    4(%[src])                     \n\t"
377
    "lw         %[temp0],    0(%[src])                     \n\t"
378
    "ins        %[temp3],    %[temp2],          24,   8    \n\t"
379
    "sll        %[temp2],    %[temp2],          8          \n\t"
380
    "rotr       %[temp3],    %[temp3],          16         \n\t"
381
    "ins        %[temp2],    %[temp1],          0,    16   \n\t"
382
    "sll        %[temp1],    %[temp1],          8          \n\t"
383
    "wsbh       %[temp3],    %[temp3]                      \n\t"
384
    "balign     %[temp0],    %[temp1],          1          \n\t"
385
    "wsbh       %[temp2],    %[temp2]                      \n\t"
386
    "wsbh       %[temp0],    %[temp0]                      \n\t"
387
    "usw        %[temp3],    8(%[dst])                     \n\t"
388
    "rotr       %[temp0],    %[temp0],          16         \n\t"
389
    "usw        %[temp2],    4(%[dst])                     \n\t"
390
    "addiu      %[src],      %[src],            16         \n\t"
391
    "usw        %[temp0],    0(%[dst])                     \n\t"
392
    "bne        %[src],      %[p_loop1_end],    0b         \n\t"
393
    " addiu     %[dst],      %[dst],            12         \n\t"
394
  "3:                                                      \n\t"
395
    "beq        %[src],      %[p_loop2_end],    2f         \n\t"
396
    " nop                                                  \n\t"
397
  "1:                                                      \n\t"
398
    "lw         %[temp0],    0(%[src])                     \n\t"
399
    "addiu      %[src],      %[src],            4          \n\t"
400
    "wsbh       %[temp1],    %[temp0]                      \n\t"
401
    "addiu      %[dst],      %[dst],            3          \n\t"
402
    "ush        %[temp1],    -2(%[dst])                    \n\t"
403
    "sra        %[temp0],    %[temp0],          16         \n\t"
404
    "bne        %[src],      %[p_loop2_end],    1b         \n\t"
405
    " sb        %[temp0],    -3(%[dst])                    \n\t"
406
  "2:                                                      \n\t"
407
    ".set       pop                                        \n\t"
408
    : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
409
      [temp3]"=&r"(temp3), [dst]"+&r"(dst), [src]"+&r"(src)
410
    : [p_loop1_end]"r"(p_loop1_end), [p_loop2_end]"r"(p_loop2_end)
411
    : "memory"
412
  );
413
}
414

415
static void ConvertBGRAToRGBA_MIPSdspR2(const uint32_t* src,
416
                                        int num_pixels, uint8_t* dst) {
417
  int temp0, temp1, temp2, temp3;
418
  const uint32_t* const p_loop1_end = src + (num_pixels & ~3);
419
  const uint32_t* const p_loop2_end = src + num_pixels;
420
  __asm__ volatile (
421
    ".set       push                                       \n\t"
422
    ".set       noreorder                                  \n\t"
423
    "beq        %[src],      %[p_loop1_end],    3f         \n\t"
424
    " nop                                                  \n\t"
425
  "0:                                                      \n\t"
426
    "lw         %[temp0],    0(%[src])                     \n\t"
427
    "lw         %[temp1],    4(%[src])                     \n\t"
428
    "lw         %[temp2],    8(%[src])                     \n\t"
429
    "lw         %[temp3],    12(%[src])                    \n\t"
430
    "wsbh       %[temp0],    %[temp0]                      \n\t"
431
    "wsbh       %[temp1],    %[temp1]                      \n\t"
432
    "wsbh       %[temp2],    %[temp2]                      \n\t"
433
    "wsbh       %[temp3],    %[temp3]                      \n\t"
434
    "addiu      %[src],      %[src],            16         \n\t"
435
    "balign     %[temp0],    %[temp0],          1          \n\t"
436
    "balign     %[temp1],    %[temp1],          1          \n\t"
437
    "balign     %[temp2],    %[temp2],          1          \n\t"
438
    "balign     %[temp3],    %[temp3],          1          \n\t"
439
    "usw        %[temp0],    0(%[dst])                     \n\t"
440
    "usw        %[temp1],    4(%[dst])                     \n\t"
441
    "usw        %[temp2],    8(%[dst])                     \n\t"
442
    "usw        %[temp3],    12(%[dst])                    \n\t"
443
    "bne        %[src],      %[p_loop1_end],    0b         \n\t"
444
    " addiu     %[dst],      %[dst],            16         \n\t"
445
  "3:                                                      \n\t"
446
    "beq        %[src],      %[p_loop2_end],    2f         \n\t"
447
    " nop                                                  \n\t"
448
  "1:                                                      \n\t"
449
    "lw         %[temp0],    0(%[src])                     \n\t"
450
    "wsbh       %[temp0],    %[temp0]                      \n\t"
451
    "addiu      %[src],      %[src],            4          \n\t"
452
    "balign     %[temp0],    %[temp0],          1          \n\t"
453
    "usw        %[temp0],    0(%[dst])                     \n\t"
454
    "bne        %[src],      %[p_loop2_end],    1b         \n\t"
455
    " addiu     %[dst],      %[dst],            4          \n\t"
456
  "2:                                                      \n\t"
457
    ".set       pop                                        \n\t"
458
    : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
459
      [temp3]"=&r"(temp3), [dst]"+&r"(dst), [src]"+&r"(src)
460
    : [p_loop1_end]"r"(p_loop1_end), [p_loop2_end]"r"(p_loop2_end)
461
    : "memory"
462
  );
463
}
464

465
static void ConvertBGRAToRGBA4444_MIPSdspR2(const uint32_t* src,
466
                                            int num_pixels, uint8_t* dst) {
467
  int temp0, temp1, temp2, temp3, temp4, temp5;
468
  const uint32_t* const p_loop1_end = src + (num_pixels & ~3);
469
  const uint32_t* const p_loop2_end = src + num_pixels;
470
  __asm__ volatile (
471
    ".set           push                                       \n\t"
472
    ".set           noreorder                                  \n\t"
473
    "beq            %[src],      %[p_loop1_end],    3f         \n\t"
474
    " nop                                                      \n\t"
475
  "0:                                                          \n\t"
476
    "lw             %[temp0],    0(%[src])                     \n\t"
477
    "lw             %[temp1],    4(%[src])                     \n\t"
478
    "lw             %[temp2],    8(%[src])                     \n\t"
479
    "lw             %[temp3],    12(%[src])                    \n\t"
480
    "ext            %[temp4],    %[temp0],          28,   4    \n\t"
481
    "ext            %[temp5],    %[temp0],          12,   4    \n\t"
482
    "ins            %[temp0],    %[temp4],          0,    4    \n\t"
483
    "ext            %[temp4],    %[temp1],          28,   4    \n\t"
484
    "ins            %[temp0],    %[temp5],          16,   4    \n\t"
485
    "ext            %[temp5],    %[temp1],          12,   4    \n\t"
486
    "ins            %[temp1],    %[temp4],          0,    4    \n\t"
487
    "ext            %[temp4],    %[temp2],          28,   4    \n\t"
488
    "ins            %[temp1],    %[temp5],          16,   4    \n\t"
489
    "ext            %[temp5],    %[temp2],          12,   4    \n\t"
490
    "ins            %[temp2],    %[temp4],          0,    4    \n\t"
491
    "ext            %[temp4],    %[temp3],          28,   4    \n\t"
492
    "ins            %[temp2],    %[temp5],          16,   4    \n\t"
493
    "ext            %[temp5],    %[temp3],          12,   4    \n\t"
494
    "ins            %[temp3],    %[temp4],          0,    4    \n\t"
495
    "precr.qb.ph    %[temp1],    %[temp1],          %[temp0]   \n\t"
496
    "ins            %[temp3],    %[temp5],          16,   4    \n\t"
497
    "addiu          %[src],      %[src],            16         \n\t"
498
    "precr.qb.ph    %[temp3],    %[temp3],          %[temp2]   \n\t"
499
#if (WEBP_SWAP_16BIT_CSP == 1)
500
    "usw            %[temp1],    0(%[dst])                     \n\t"
501
    "usw            %[temp3],    4(%[dst])                     \n\t"
502
#else
503
    "wsbh           %[temp1],    %[temp1]                      \n\t"
504
    "wsbh           %[temp3],    %[temp3]                      \n\t"
505
    "usw            %[temp1],    0(%[dst])                     \n\t"
506
    "usw            %[temp3],    4(%[dst])                     \n\t"
507
#endif
508
    "bne            %[src],      %[p_loop1_end],    0b         \n\t"
509
    " addiu         %[dst],      %[dst],            8          \n\t"
510
  "3:                                                          \n\t"
511
    "beq            %[src],      %[p_loop2_end],    2f         \n\t"
512
    " nop                                                      \n\t"
513
  "1:                                                          \n\t"
514
    "lw             %[temp0],    0(%[src])                     \n\t"
515
    "ext            %[temp4],    %[temp0],          28,   4    \n\t"
516
    "ext            %[temp5],    %[temp0],          12,   4    \n\t"
517
    "ins            %[temp0],    %[temp4],          0,    4    \n\t"
518
    "ins            %[temp0],    %[temp5],          16,   4    \n\t"
519
    "addiu          %[src],      %[src],            4          \n\t"
520
    "precr.qb.ph    %[temp0],    %[temp0],          %[temp0]   \n\t"
521
#if (WEBP_SWAP_16BIT_CSP == 1)
522
    "ush            %[temp0],    0(%[dst])                     \n\t"
523
#else
524
    "wsbh           %[temp0],    %[temp0]                      \n\t"
525
    "ush            %[temp0],    0(%[dst])                     \n\t"
526
#endif
527
    "bne            %[src],      %[p_loop2_end],    1b         \n\t"
528
    " addiu         %[dst],      %[dst],            2          \n\t"
529
  "2:                                                          \n\t"
530
    ".set           pop                                        \n\t"
531
    : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
532
      [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
533
      [dst]"+&r"(dst), [src]"+&r"(src)
534
    : [p_loop1_end]"r"(p_loop1_end), [p_loop2_end]"r"(p_loop2_end)
535
    : "memory"
536
  );
537
}
538

539
static void ConvertBGRAToRGB565_MIPSdspR2(const uint32_t* src,
540
                                          int num_pixels, uint8_t* dst) {
541
  int temp0, temp1, temp2, temp3, temp4, temp5;
542
  const uint32_t* const p_loop1_end = src + (num_pixels & ~3);
543
  const uint32_t* const p_loop2_end = src + num_pixels;
544
  __asm__ volatile (
545
    ".set           push                                       \n\t"
546
    ".set           noreorder                                  \n\t"
547
    "beq            %[src],      %[p_loop1_end],    3f         \n\t"
548
    " nop                                                      \n\t"
549
  "0:                                                          \n\t"
550
    "lw             %[temp0],    0(%[src])                     \n\t"
551
    "lw             %[temp1],    4(%[src])                     \n\t"
552
    "lw             %[temp2],    8(%[src])                     \n\t"
553
    "lw             %[temp3],    12(%[src])                    \n\t"
554
    "ext            %[temp4],    %[temp0],          8,    16   \n\t"
555
    "ext            %[temp5],    %[temp0],          5,    11   \n\t"
556
    "ext            %[temp0],    %[temp0],          3,    5    \n\t"
557
    "ins            %[temp4],    %[temp5],          0,    11   \n\t"
558
    "ext            %[temp5],    %[temp1],          5,    11   \n\t"
559
    "ins            %[temp4],    %[temp0],          0,    5    \n\t"
560
    "ext            %[temp0],    %[temp1],          8,    16   \n\t"
561
    "ext            %[temp1],    %[temp1],          3,    5    \n\t"
562
    "ins            %[temp0],    %[temp5],          0,    11   \n\t"
563
    "ext            %[temp5],    %[temp2],          5,    11   \n\t"
564
    "ins            %[temp0],    %[temp1],          0,    5    \n\t"
565
    "ext            %[temp1],    %[temp2],          8,    16   \n\t"
566
    "ext            %[temp2],    %[temp2],          3,    5    \n\t"
567
    "ins            %[temp1],    %[temp5],          0,    11   \n\t"
568
    "ext            %[temp5],    %[temp3],          5,    11   \n\t"
569
    "ins            %[temp1],    %[temp2],          0,    5    \n\t"
570
    "ext            %[temp2],    %[temp3],          8,    16   \n\t"
571
    "ext            %[temp3],    %[temp3],          3,    5    \n\t"
572
    "ins            %[temp2],    %[temp5],          0,    11   \n\t"
573
    "append         %[temp0],    %[temp4],          16         \n\t"
574
    "ins            %[temp2],    %[temp3],          0,    5    \n\t"
575
    "addiu          %[src],      %[src],            16         \n\t"
576
    "append         %[temp2],    %[temp1],          16         \n\t"
577
#if (WEBP_SWAP_16BIT_CSP == 1)
578
    "usw            %[temp0],    0(%[dst])                     \n\t"
579
    "usw            %[temp2],    4(%[dst])                     \n\t"
580
#else
581
    "wsbh           %[temp0],    %[temp0]                      \n\t"
582
    "wsbh           %[temp2],    %[temp2]                      \n\t"
583
    "usw            %[temp0],    0(%[dst])                     \n\t"
584
    "usw            %[temp2],    4(%[dst])                     \n\t"
585
#endif
586
    "bne            %[src],      %[p_loop1_end],    0b         \n\t"
587
    " addiu         %[dst],      %[dst],            8          \n\t"
588
  "3:                                                          \n\t"
589
    "beq            %[src],      %[p_loop2_end],    2f         \n\t"
590
    " nop                                                      \n\t"
591
  "1:                                                          \n\t"
592
    "lw             %[temp0],    0(%[src])                     \n\t"
593
    "ext            %[temp4],    %[temp0],          8,    16   \n\t"
594
    "ext            %[temp5],    %[temp0],          5,    11   \n\t"
595
    "ext            %[temp0],    %[temp0],          3,    5    \n\t"
596
    "ins            %[temp4],    %[temp5],          0,    11   \n\t"
597
    "addiu          %[src],      %[src],            4          \n\t"
598
    "ins            %[temp4],    %[temp0],          0,    5    \n\t"
599
#if (WEBP_SWAP_16BIT_CSP == 1)
600
    "ush            %[temp4],    0(%[dst])                     \n\t"
601
#else
602
    "wsbh           %[temp4],    %[temp4]                      \n\t"
603
    "ush            %[temp4],    0(%[dst])                     \n\t"
604
#endif
605
    "bne            %[src],      %[p_loop2_end],    1b         \n\t"
606
    " addiu         %[dst],      %[dst],            2          \n\t"
607
  "2:                                                          \n\t"
608
    ".set           pop                                        \n\t"
609
    : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
610
      [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
611
      [dst]"+&r"(dst), [src]"+&r"(src)
612
    : [p_loop1_end]"r"(p_loop1_end), [p_loop2_end]"r"(p_loop2_end)
613
    : "memory"
614
  );
615
}
616

617
static void ConvertBGRAToBGR_MIPSdspR2(const uint32_t* src,
618
                                       int num_pixels, uint8_t* dst) {
619
  int temp0, temp1, temp2, temp3;
620
  const uint32_t* const p_loop1_end = src + (num_pixels & ~3);
621
  const uint32_t* const p_loop2_end = src + num_pixels;
622
  __asm__ volatile (
623
    ".set       push                                         \n\t"
624
    ".set       noreorder                                    \n\t"
625
    "beq        %[src],      %[p_loop1_end],    3f           \n\t"
626
    " nop                                                    \n\t"
627
  "0:                                                        \n\t"
628
    "lw         %[temp0],    0(%[src])                       \n\t"
629
    "lw         %[temp1],    4(%[src])                       \n\t"
630
    "lw         %[temp2],    8(%[src])                       \n\t"
631
    "lw         %[temp3],    12(%[src])                      \n\t"
632
    "ins        %[temp0],    %[temp1],          24,    8     \n\t"
633
    "sra        %[temp1],    %[temp1],          8            \n\t"
634
    "ins        %[temp1],    %[temp2],          16,    16    \n\t"
635
    "sll        %[temp2],    %[temp2],          8            \n\t"
636
    "balign     %[temp3],    %[temp2],          1            \n\t"
637
    "addiu      %[src],      %[src],            16           \n\t"
638
    "usw        %[temp0],    0(%[dst])                       \n\t"
639
    "usw        %[temp1],    4(%[dst])                       \n\t"
640
    "usw        %[temp3],    8(%[dst])                       \n\t"
641
    "bne        %[src],      %[p_loop1_end],    0b           \n\t"
642
    " addiu     %[dst],      %[dst],            12           \n\t"
643
  "3:                                                        \n\t"
644
    "beq        %[src],      %[p_loop2_end],    2f           \n\t"
645
    " nop                                                    \n\t"
646
  "1:                                                        \n\t"
647
    "lw         %[temp0],    0(%[src])                       \n\t"
648
    "addiu      %[src],      %[src],            4            \n\t"
649
    "addiu      %[dst],      %[dst],            3            \n\t"
650
    "ush        %[temp0],    -3(%[dst])                      \n\t"
651
    "sra        %[temp0],    %[temp0],          16           \n\t"
652
    "bne        %[src],      %[p_loop2_end],    1b           \n\t"
653
    " sb        %[temp0],    -1(%[dst])                      \n\t"
654
  "2:                                                        \n\t"
655
    ".set       pop                                          \n\t"
656
    : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
657
      [temp3]"=&r"(temp3), [dst]"+&r"(dst), [src]"+&r"(src)
658
    : [p_loop1_end]"r"(p_loop1_end), [p_loop2_end]"r"(p_loop2_end)
659
    : "memory"
660
  );
661
}
662

663
//------------------------------------------------------------------------------
664
// Entry point
665

666
extern void VP8LDspInitMIPSdspR2(void);
667

668
WEBP_TSAN_IGNORE_FUNCTION void VP8LDspInitMIPSdspR2(void) {
669
  VP8LMapColor32b = MapARGB_MIPSdspR2;
670
  VP8LMapColor8b = MapAlpha_MIPSdspR2;
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672
  VP8LPredictors[5] = Predictor5_MIPSdspR2;
673
  VP8LPredictors[6] = Predictor6_MIPSdspR2;
674
  VP8LPredictors[7] = Predictor7_MIPSdspR2;
675
  VP8LPredictors[8] = Predictor8_MIPSdspR2;
676
  VP8LPredictors[9] = Predictor9_MIPSdspR2;
677
  VP8LPredictors[10] = Predictor10_MIPSdspR2;
678
  VP8LPredictors[11] = Predictor11_MIPSdspR2;
679
  VP8LPredictors[12] = Predictor12_MIPSdspR2;
680
  VP8LPredictors[13] = Predictor13_MIPSdspR2;
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682
  VP8LAddGreenToBlueAndRed = AddGreenToBlueAndRed_MIPSdspR2;
683
  VP8LTransformColorInverse = TransformColorInverse_MIPSdspR2;
684

685
  VP8LConvertBGRAToRGB = ConvertBGRAToRGB_MIPSdspR2;
686
  VP8LConvertBGRAToRGBA = ConvertBGRAToRGBA_MIPSdspR2;
687
  VP8LConvertBGRAToRGBA4444 = ConvertBGRAToRGBA4444_MIPSdspR2;
688
  VP8LConvertBGRAToRGB565 = ConvertBGRAToRGB565_MIPSdspR2;
689
  VP8LConvertBGRAToBGR = ConvertBGRAToBGR_MIPSdspR2;
690
}
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692
#else  // !WEBP_USE_MIPS_DSP_R2
693

694
WEBP_DSP_INIT_STUB(VP8LDspInitMIPSdspR2)
695

696
#endif  // WEBP_USE_MIPS_DSP_R2
697

698
Product

Resources

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